Fan



May 29, I923.

C. ROSINE FAN Filed Oct, 24, 1921 2 sheets-sheet 1 NVENTOR.

WM $9M} ATTORN May 29, 1923.

C. ROSINE FAN Filed Oct. 24, 1921 2 Sheets-Sheet 2 1 N L ENTOR.

A TTORNE Y.

Patented May 29, 1923'.

CONRAD ROSINE, or CHICAGO, ILLINoIs, assre'non QFDNE-HALF TO -WILLIA1VI ROBERTSON, or CHICAGO, rumors.

FAN.

Application filed October 24, 1921. Serial No. 51Q,002.

To all whom it may concern Beit known that I, CONRAD RosINE, a

fans, especially of the type in use in connection with automobiles and has for its object the production of a device by means of which the fan may be caused to do much or little work as desired by the user.

A further object is the production of a device by means of which the angles of the blades may be varied, thus regulating the amount of air forced through the same.

A further object is the production of a device of simple construction, one that can be cheaply constructed and one not liable to disarrangementof parts. v

These and such other objects as may hereinafter appear are attained by my device an embodiment of which is illustrated in the accompanying drawings in which:

Fig. 1 represents a front elevation of my fan with the blades vertical.

Fig. 2 represents a side elevation of Fig. 1.

Fig. 3 represents a my improved blades.

Fig. 4E represents an end elevation of Fig.

Fig. 5 represents a front elevation of my device similar to Fig. 1, but withthe blades turned.

Fig. 6 represents Fig. 5.

Like numerals of reference indicate similar ing.

Referring now to the drawing:

In the drawing there is illustrated a rotatable supporting member 7 in the form of a pulley having a track 8 and lateral guide flanges 9 and 9 One end of the pulley is a side elevation of plan view of one of parts inthe several figures of the drawformed with a square extension 10 providing fourjfaces, and each'face is formedwith a raised circular bossll. A. plurality of grooves 12 are formed in the face of each boss upon lines coincident'with the diameter of the boss. A rod 13 projects centrally from each boss and forms a support for a fan blade 14.

Each fan blade is formed with an opening I .16 and adjacent bothends of the opening,

the blade, whichv is preferably made i of metal, is slitted as indicated at 17 and 18 and the portion of metal 21 between the opening 16 and slit 17 is stamped or bowed outwardly in the form of an eye 19, while the metal 22 between the slits'is stamped .or

bowed outwardly in the opposite direction in the form of an eye 20. These eyes form sockets for receiving the supporting rods 13.

The fan blades are on the rods 13 by means of coil springs 25 which are located in the openings 16 and surround the IOdS'l3. The outer'end of each spring abuts a nut 23 fixed'upon a rod 13, while the inner end of each spring abuts .a nut 24 slidably mounted upon a' rod 13 and restrained from inward movement by the eye .20.v niach spring25 yieldingly holds its fan blade in adjusted position. i. e., with its inner edge in a groove 12.. It is there fore evident that by upon a fan blade in so that its end will and by then turning pulling longitudinally an outward direction clear the grooves 12,

rotatable 'member having a] polygonal-ex tension at one end, the faces of saidpolygonal extension beingprovlded with grooves,

yieldingly supported v the fan blade to the desired angle and allowing it to be-seated supports extending centrally of said faces.

and fan blades yieldingly mounted upon said supports with their inner edges yieldingly pressed into said grooves for the purpose set forth.

2. In a device of the class described, a rotatable support having a polygonal ex- 5 tension, the faces of said extension being provided with grooves, rods extending from said faces, fan blades having sockets for ro tatablv receiving said rods, and springs surrounding said rods for normally pressing the inner ends of said blades into said 10 grooves, said blades being adapted to be shifted longitudinally on said rods and an gularly adjusted.

CONRAD 'ROSINE 

